/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:42:02,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:42:02,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:42:02,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:42:02,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:42:02,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:42:02,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:42:02,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:42:02,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:42:02,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:42:02,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:42:02,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:42:02,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:42:02,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:42:02,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:42:02,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:42:02,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:42:02,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:42:02,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:42:02,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:42:02,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:42:02,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:42:02,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:42:02,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:42:02,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:42:02,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:42:02,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:42:02,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:42:02,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:42:02,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:42:02,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:42:02,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:42:02,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:42:02,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:42:02,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:42:02,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:42:02,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:42:02,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:42:02,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:42:02,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:42:02,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:42:02,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:42:02,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:42:02,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:42:02,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:42:02,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:42:02,703 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:42:02,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:42:02,704 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:42:02,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:42:02,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:42:02,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:42:02,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:42:02,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:42:02,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:42:02,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:42:02,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:42:02,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:42:02,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:42:02,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:42:02,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:42:02,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:42:02,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:42:02,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:42:02,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:42:02,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:42:02,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:42:02,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:42:02,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:42:02,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:42:02,710 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:42:02,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:42:03,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:42:03,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:42:03,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:42:03,220 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:42:03,220 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:42:03,221 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 22:42:03,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d2b0dfb4/9083e4988e1e4166a288ac0426a6017d/FLAG775b2f700 [2020-09-24 22:42:03,873 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:42:03,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 22:42:03,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d2b0dfb4/9083e4988e1e4166a288ac0426a6017d/FLAG775b2f700 [2020-09-24 22:42:04,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d2b0dfb4/9083e4988e1e4166a288ac0426a6017d [2020-09-24 22:42:04,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:42:04,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:42:04,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:04,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:42:04,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:42:04,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af1053e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04, skipping insertion in model container [2020-09-24 22:42:04,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:42:04,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:42:04,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:04,642 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:42:04,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:04,793 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:42:04,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04 WrapperNode [2020-09-24 22:42:04,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:04,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:42:04,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:42:04,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:42:04,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... [2020-09-24 22:42:04,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:42:04,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:42:04,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:42:04,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:42:04,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:42:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:42:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:42:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:42:04,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:42:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 22:42:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:42:04,924 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 22:42:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:42:04,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:42:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:42:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:42:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:42:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:42:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:42:04,925 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 22:42:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:42:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:42:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:42:04,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 22:42:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:42:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:42:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:42:04,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:42:05,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:42:05,343 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:42:05,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:05 BoogieIcfgContainer [2020-09-24 22:42:05,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:42:05,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:42:05,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:42:05,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:42:05,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:42:04" (1/3) ... [2020-09-24 22:42:05,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e75c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:05, skipping insertion in model container [2020-09-24 22:42:05,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:04" (2/3) ... [2020-09-24 22:42:05,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e75c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:05, skipping insertion in model container [2020-09-24 22:42:05,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:05" (3/3) ... [2020-09-24 22:42:05,358 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-09-24 22:42:05,370 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:42:05,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:42:05,402 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:42:05,430 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:42:05,430 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:42:05,430 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:42:05,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:42:05,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:42:05,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:42:05,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:42:05,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:42:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-24 22:42:05,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:42:05,465 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:05,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:05,467 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:05,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1490874143, now seen corresponding path program 1 times [2020-09-24 22:42:05,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:05,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295347756] [2020-09-24 22:42:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:06,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:06,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:42:06,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:06,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-24 22:42:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:42:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:42:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:42:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:42:06,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:06,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:06,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:06,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:06,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:42:06,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:06,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:06,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:06,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:06,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:06,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:06,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:06,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:06,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:42:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:06,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:06,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295347756] [2020-09-24 22:42:06,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:06,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 22:42:06,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170507291] [2020-09-24 22:42:06,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:42:06,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:06,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:42:06,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:42:06,488 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 10 states. [2020-09-24 22:42:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:07,461 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2020-09-24 22:42:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:42:07,464 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-24 22:42:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:07,478 INFO L225 Difference]: With dead ends: 209 [2020-09-24 22:42:07,479 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 22:42:07,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:42:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 22:42:07,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2020-09-24 22:42:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 22:42:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-24 22:42:07,562 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 31 [2020-09-24 22:42:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:07,563 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-24 22:42:07,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:42:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-24 22:42:07,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:42:07,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:07,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:07,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:42:07,568 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1249778318, now seen corresponding path program 1 times [2020-09-24 22:42:07,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:07,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315095994] [2020-09-24 22:42:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:07,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:07,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:42:09,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:09,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-09-24 22:42:09,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:42:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 22:42:09,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:42:09,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:42:09,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:09,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:09,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:09,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:09,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:09,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:09,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:09,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:09,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:09,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:09,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:42:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:09,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:09,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:09,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315095994] [2020-09-24 22:42:09,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:09,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:42:09,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980825538] [2020-09-24 22:42:09,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:42:09,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:42:09,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:42:09,913 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 14 states. [2020-09-24 22:42:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:11,401 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-09-24 22:42:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:42:11,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-24 22:42:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:11,407 INFO L225 Difference]: With dead ends: 205 [2020-09-24 22:42:11,407 INFO L226 Difference]: Without dead ends: 203 [2020-09-24 22:42:11,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:42:11,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-24 22:42:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 155. [2020-09-24 22:42:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 22:42:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-09-24 22:42:11,432 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 52 [2020-09-24 22:42:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:11,432 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-09-24 22:42:11,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:42:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-09-24 22:42:11,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:42:11,434 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:11,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:11,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:42:11,435 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:11,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:11,436 INFO L82 PathProgramCache]: Analyzing trace with hash -448975570, now seen corresponding path program 1 times [2020-09-24 22:42:11,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:11,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595922595] [2020-09-24 22:42:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:16,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:42:16,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:42:16,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:16,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:42:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 22:42:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:42:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:16,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:16,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:16,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:42:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:16,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:16,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:16,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:16,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:42:16,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:16,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:16,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:16,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:42:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:42:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:42:16,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595922595] [2020-09-24 22:42:16,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:16,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:42:16,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106290393] [2020-09-24 22:42:16,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:42:16,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:16,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:42:16,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:42:16,742 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand 13 states. [2020-09-24 22:42:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:18,138 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-09-24 22:42:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:42:18,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-24 22:42:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:18,142 INFO L225 Difference]: With dead ends: 209 [2020-09-24 22:42:18,142 INFO L226 Difference]: Without dead ends: 207 [2020-09-24 22:42:18,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=582, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:42:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-24 22:42:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 157. [2020-09-24 22:42:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 22:42:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2020-09-24 22:42:18,184 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 52 [2020-09-24 22:42:18,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:18,186 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2020-09-24 22:42:18,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:42:18,186 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2020-09-24 22:42:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 22:42:18,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:18,190 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:18,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:42:18,191 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:18,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1366237712, now seen corresponding path program 1 times [2020-09-24 22:42:18,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:18,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114362834] [2020-09-24 22:42:18,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:18,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:22,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:22,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 22:42:22,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4392 [2020-09-24 22:42:22,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 22:42:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 22:42:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 22:42:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:42:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:23,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:23,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:23,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:23,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:23,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:23,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:23,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:23,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:23,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:42:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:42:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:23,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:23,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:23,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:42:23,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:23,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 22:42:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:23,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:23,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:42:23,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:23,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 22:42:23,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:42:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:42:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:23,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:23,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:23,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:23,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:23,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 22:42:23,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:42:23,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:23,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:23,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:42:23,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114362834] [2020-09-24 22:42:23,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:23,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-09-24 22:42:23,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103438706] [2020-09-24 22:42:23,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 22:42:23,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:23,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 22:42:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2020-09-24 22:42:23,863 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 27 states. [2020-09-24 22:42:25,775 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-09-24 22:42:26,568 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-09-24 22:42:26,751 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-09-24 22:42:26,942 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-09-24 22:42:27,153 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-24 22:42:27,360 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-09-24 22:42:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:27,859 INFO L93 Difference]: Finished difference Result 263 states and 298 transitions. [2020-09-24 22:42:27,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 22:42:27,860 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 72 [2020-09-24 22:42:27,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:27,865 INFO L225 Difference]: With dead ends: 263 [2020-09-24 22:42:27,865 INFO L226 Difference]: Without dead ends: 247 [2020-09-24 22:42:27,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=418, Invalid=2774, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 22:42:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-09-24 22:42:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 191. [2020-09-24 22:42:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 22:42:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 209 transitions. [2020-09-24 22:42:27,891 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 209 transitions. Word has length 72 [2020-09-24 22:42:27,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:27,892 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 209 transitions. [2020-09-24 22:42:27,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 22:42:27,892 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 209 transitions. [2020-09-24 22:42:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 22:42:27,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:27,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:27,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:42:27,895 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1215650640, now seen corresponding path program 1 times [2020-09-24 22:42:27,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:27,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100892670] [2020-09-24 22:42:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:28,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:31,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:31,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 22:42:31,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4050 [2020-09-24 22:42:31,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 22:42:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 22:42:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 22:42:31,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:32,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:32,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:32,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:32,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:32,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:32,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:32,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:32,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:32,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:32,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:32,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:32,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:32,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:42:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:32,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:32,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:32,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:32,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:32,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:32,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 22:42:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:32,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:42:32,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 22:42:32,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:42:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:42:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:32,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 22:42:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:32,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:32,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:42:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:42:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:42:32,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100892670] [2020-09-24 22:42:32,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:32,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-09-24 22:42:32,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67597230] [2020-09-24 22:42:32,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 22:42:32,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:32,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 22:42:32,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2020-09-24 22:42:32,877 INFO L87 Difference]: Start difference. First operand 191 states and 209 transitions. Second operand 26 states. [2020-09-24 22:42:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:36,262 INFO L93 Difference]: Finished difference Result 295 states and 332 transitions. [2020-09-24 22:42:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-24 22:42:36,263 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 72 [2020-09-24 22:42:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:36,266 INFO L225 Difference]: With dead ends: 295 [2020-09-24 22:42:36,267 INFO L226 Difference]: Without dead ends: 279 [2020-09-24 22:42:36,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=418, Invalid=2444, Unknown=0, NotChecked=0, Total=2862 [2020-09-24 22:42:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-24 22:42:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 193. [2020-09-24 22:42:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 22:42:36,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2020-09-24 22:42:36,290 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 72 [2020-09-24 22:42:36,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:36,291 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2020-09-24 22:42:36,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 22:42:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2020-09-24 22:42:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-24 22:42:36,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:36,295 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:42:36,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:42:36,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:36,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1778642481, now seen corresponding path program 1 times [2020-09-24 22:42:36,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:36,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671323267] [2020-09-24 22:42:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:41,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:41,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 22:42:41,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:41,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 22:42:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-24 22:42:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 22:42:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 22:42:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:46,475 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 405 DAG size of output: 57 [2020-09-24 22:42:48,521 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 405 DAG size of output: 55 [2020-09-24 22:42:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:48,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:48,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:42:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:48,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:48,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:48,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:48,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:48,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 22:42:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:48,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:48,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:48,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:42:48,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:48,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:48,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:42:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:48,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:48,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:48,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:48,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:48,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 22:42:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:52,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:42:52,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3164 [2020-09-24 22:42:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-24 22:42:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 22:42:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0